1.	Simplify 1 Simplify the following expression: $$ 2(-5)6 - \left(-3 + 5\right)\left(-5 + 6\right) $$ Correct Answer $$ -62$$ or -62.0000

2.	Simplify 2 Simplify the following expression: $$ \left(5 - 6 + -3 - -1\right)2\left(3 + 4\right) $$ Correct Answer $$ -42$$ or -42.0000

3.	Fractions 1 Simplify the following expression: $$ \frac{5}{5} + \frac{4}{6} $$ Correct Answer $$ \frac{5}{3}$$ or 1.6666666666666665

4.	Fractions 2 Simplify the following expression: $$ \frac{\frac{-3}{4}}{\frac{4}{6}} $$ Correct Answer $$ \frac{-9}{8}$$ or -1.125

5.	Significant figures 1. Write the following to 4 significant figures: 0.029999323 Correct Answer 0.03000 or $$3.000\times10^{-2}$$ 2. Write the following to 4 significant figures: 11.214885 Correct Answer 11.21 or $$1.121\times10^{1}$$

6.	Standard Form 1. Write the following in standard form to 5 significant digits: 0.000757398 Correct Answer $$7.5740\times10^{-4}$$ 2. Write the following in standard form to 3 significant digits: 1.26843 Correct Answer $$1.27\times10^{0}$$

7.	Significant figures 1. Write the following in preferred standard form to 5 significant digits: 0.00001172983 Correct Answer $$11.730\times10^{-6}$$ 2. Write the following in preferred standard form to 5 significant digits: 0.002587590 Correct Answer $$2.5876\times10^{-3}$$

8.	Simplify 2 Simplify the following expression: $$ {\left(4 + 3\right)}^{2} - \left(-2(-5) + 5(-1)\right) $$ Correct Answer $$ 44$$ or 44.0000

9.	Simplify 1 Simplify the following expression: $$ \left(4 - 4 + 4\times1\right)2(-3)(-2) $$ Correct Answer $$ 48$$ or 48.0000

10.	Simplify 2 Simplify the following expression: $$ 2\times5\times2\frac{-2 - 2}{4 + 1} $$ Correct Answer $$ -16$$ or -16.0000